Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d10c9ce253299f…

MALICIOUS

PDF

36.5 KB Created: 2020-08-19 14:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9974b809937239dc2bcf46c6eaa4c924 SHA-1: a148e292e666a50ec628735606c6ad3fbf5b8f35 SHA-256: 69d10c9ce253299fcbf0dd0cbd707a704c13ab7d8ff1f4a08cfd42522f2f540e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'carrom disc pool mod apk apkpure' download, directing users to the malicious URL. The presence of numerous external PDF links suggests a link farm or a method to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=carrom+disc+pool+mod+apk+apkpure
    • http://files.notbysight.shop/uploads/1/3/1/8/131871740/8101467.pdf
    • http://files.goodtravelofegypt.net/uploads/1/3/1/3/131383657/dososuzisir.pdf
    • http://bepov.lorisen.com/uploads/1/3/1/4/131438428/5531974.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/39754150985.pdf
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/plasma_proteins_biochemistry.pdf
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/satixer.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/4850852142.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/laritovoneruxavarup.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/kegus.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/excell_pressure_washer_engine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/6142247142.pdf
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/45114401323.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ab.bin
4d0abf6124f032d3f6f089ce5d933ddeddf48896b6eabd1a97e666abbab2c6f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x47AB 5188 bytes
font_01_sfnt_off00005934.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5934 1800 bytes
font_02_sfnt_off000061c2.bin
e7d16e0f8378b7e8a9ff39dc74393f4d9a0e1517cd665a6c7c4c01c3c6533b9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 10308 bytes